Cotter-pin extiiactor



WITNESS I w 48W W. E. AYLOR AND M. A. McGUFF.

CUTTER PIN EXTRACTOR.

APPLICATION FILED AUG. I4. 1918.

1,319,829. Patented Oct. 28,1919.

neutral) STATES PATENT onrron.

WILLIAM E. AYLOR AND MATTHEW A. McG-UFF, F DAYTON, OHIO.

co'r'rnn rm ExTnAo'roR.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed August 14, 1918. Serial No. 249,773.

To aZZ w/wm it may concern Be it known that we, WILLIAM EIAYLORI' andMATTHEW A. MCGUFF, citizens of the United States, residing at Dayton, inthe county of Montgomery and State of Ohio, have invented certain newand useful Improvements in Cotter- Pin Extractors, of which thefollowing is a specification.

Our invention comprises a tool or implement for extracting cotter pinsemployed for holding the clevis pins in airship construction. In airshipconstruction all the parts necessarily have to be unitedand the airshipcompleted inall its details in order that it may be subjected to testsor actual flights. These tests are carried on for a certain time inorder to ascertain whether the airship is in a satisfactory and safe condition. After this is determined by the tests the entire aircraft isdismantled and all the parts disconnected for packing and shipping thesame to the point of ultimate use. This dismantling or taking apart ofthe airships has heretofore entailed considerable time owing to it beingnecessary to remove a great many cotter pins which hold the clevis pinsused to unite the clevises. It is therefore the object of the presentinvention to provide a specially constructed tool designed for theexpress purpose of removing these cotter pins quickly and withcomparative ease. The accompanying drawings illustrate our improvedcotter pin extractor and to these reference will now be made in generalterms. Figure 1 is a. side elevation of the cotter pin extractor showingthe cotter pin extracting bar partly extended to hook into the eye of acotter pin. Fig. 2 is a top plan view of the forward end of theimplement as shown in Fig. 1 and Fig. 3 is a bottom plan view showingthe hook end of the extracting bar engaging the eye of a cotter pin andin the act of withdrawing said pin from the clevis pin and Fig. 4 is asectional view of the end of the tool on the line H of Fig. 2.

In a detail description of the invention similar reference charactersindicate corresponding parts in the several illustrations, 1 designatesthe stationary body portion of the tool which consists preferably of around bar the forward end of which is flattened and turned to form ahandle 2 which is gripped by the hand in the manipulation of the device.The front end of the said bar 1 is curved downwardly as at 5 to bring itTo meet this requirement-the portion 5 ofsaid bar 1 has an opening 7therein through which the pin extracting bar 6 slides in themanipulation of the implement. The supporting bar 1 remains stationarywhile the extracting bar 6 is operated. The forward end of said bar 1 isalso extended upwardly as at 3 and has a recess surrounded by acorrugated portion 4 which abuts against a side of the clevis or othersurface in positioning the implement for extracting the cotter pins. Thesaid face 4: is provided with a rough surface or corrugations whichenable it to avoid slipping on the surface of the clevis when brought incontact therewith and operated. The said end 3 of the bar 1 is alsoprovided as before stated with the recess 8 which is of U-shape and intowhich the cotter pins are drawn in removing the same. The forward end ofthe cotter extracting bar 6 is reduced in diameter and turned up to forma hook 9 which enters the eye of the cotter pin 10 as shown in Fig. .3.In this illustration the said extracting bar 6 is being drawn rearwardlyto withdraw the cotter pin 10 from the clevis pin 11 which holds theclevis 12. The cotter pin extracting bar 6 is connected to a handle 13by a pivot pin 14 and a clevis 15 and may be adjusted to shorten orextend the length of said bar 6 by adjusting lock nuts 17. The handle orlever 13 is fulcrumed to the main body or bar 1 near the handle 2 by apivot pin 18. In manipulating the implement the bar 6 is extended to thedesired point to enter the eye of the cotter pin to be removed. In somecases the cotter pins are in more or less inaccessible places and it isrequired to extend the rod 6 to a greater length than in cases where thecotter pins are more exposed. The hook end 9 enters the eye of the pinwhile the handle portion 2 is gripped by the hand with the fingersextended over the pivotal handle 13. By drawing rearwardly on the handle13 the pin extracting bar 6 is likewise drawn rearwardly with the resultend terminating in an enlarged portion having a recess therein and anopening therein below said recess therein, a pin extracting barsupported and movable in said opening, said bar having its end formed ina hook to enter the eye of a cotter pin and to draw the cotter pin intothe recess in the end of said stationary supporting bar in extractingsaid In testimony whereof we affix our signatures.

WILLIAM E. AYLOR. MATTHEW A. MCGUFF.

Copies of this patent may be obtained for five cents each, by addressingthe, Commissioner of Patents, Washington, .D. (1..

